Question

3*(х+7)=33 (х+2)*(х-2)=0

Answer 1

3 · (х + 7) = 33

х + 7 = 33 : 3

х + 7 = 11

х = 11 - 7

х = 4

Ответ: 4.

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Чтобы произведение равнялось 0, достаточно, чтобы один из множителей был равен 0

х + 2 = 0                   и                   х - 2 = 0

х = -2                                              х = 2

Ответ: (-2; 2).

Answer 2

To solve the equations:

1. 3*(x+7) = 33

First, simplify the equation:

3*(x+7) = 33

Divide both sides by 3 to isolate (x+7):

x + 7 = 11

Now, subtract 7 from both sides:

x = 11 - 7

x = 4

So, the solution to the first equation is x = 4.

2. (x+2)*(x-2) = 0

To solve this equation, set each factor equal to zero and solve for x:

x + 2 = 0

Subtract 2 from both sides:

x = -2

x - 2 = 0

Add 2 to both sides:

x = 2

So, the solutions to the second equation are x = -2 and x = 2.

Therefore, the solutions to the system of equations are x = 4, x = -2, and x = 2.